Jump to main content
Jump to site search

Issue 72, 2016
Previous Article Next Article

Enhanced proton conductivity of proton exchange membranes by incorporating phosphorylated hollow titania spheres

Author affiliations

Abstract

Phosphorylated hollow titania spheres (PHTS) with a superior water retention property are synthesized via a soft-template method and introduced into a sulfonated poly(ether ether ketone) (SPEEK) matrix to fabricate SPEEK/PHTS hybrid membranes. The incorporation of PHTS renders hybrid membranes with higher water uptake but lower swelling degree. The increased water retention capacity and additional proton transfer sites in the organic–inorganic interfacial zones lead to an enhancement in membrane proton conductivity. The highest proton conductivity (σ) of 0.228 S cm−1 at 70 °C under 100% RH for the hybrid membrane with 20 wt% of PHTS is achieved, which is two orders of magnitude higher than the pristine SPEEK membrane. Moreover, the PHTS fillers also prolong the tortuous pathways for methanol transport, conferring the hybrid membranes lower methanol permeability (P) in the range of 3.8–4.4 × 10−7 cm2 s−1. The maximum selectivity (σ/P) of as-prepared hybrid membranes is 2.09 × 105 S s cm−3, twice higher than a pristine SPEEK membrane.

Graphical abstract: Enhanced proton conductivity of proton exchange membranes by incorporating phosphorylated hollow titania spheres

Back to tab navigation

Article information


Submitted
11 Apr 2016
Accepted
14 Jul 2016
First published
14 Jul 2016

RSC Adv., 2016,6, 68407-68415
Article type
Paper

Enhanced proton conductivity of proton exchange membranes by incorporating phosphorylated hollow titania spheres

L. Cao, X. Shen, X. Yang, B. Zhang, Z. Li, M. Gang, C. Wang, H. Wu and Z. Jiang, RSC Adv., 2016, 6, 68407
DOI: 10.1039/C6RA09291H

Social activity

Search articles by author

Spotlight

Advertisements